As a side note:

Could somebody who feels confident enough please check
http://wiki.maemo.org/Mail_for_Exchange
and make required changes to reflect the status of PR 1.1?

I wanted to edit the compatibility section today, which still lists is not compatible: "Microsoft Exchange 2003 (is supported in the first MfE update which is not available for public yet)"
After reading this thread I decided not to touch the page, though, as some users still report problems, I don't have access to any Exchange server myself and maybe it's better overall if somebody does it who know what he/she writes about.